Koine /koiˈnē/

1. A Greek dialect developed from Attic, in use in the E Mediterranean in Hellenistic and Byzantine times
2. (often without cap) any dialect that has spread and become the common language of a larger area

• back-country
• backcourt
• backcourts
• back-crawl
• back-cross
• back-crossed
• back-crosses
• back-crossing
• back-date
• back-dated
• back-dates
• back-dating
• back door
• backdoor
• back doors
• back down
• backdown
• back-draught
• back-draughts
• backdrop
• backdrops
• backed
• back-end
• back-ends
• backer